Harvey Tool 20295 Micro Drill Bit Size 60 Solid Carbide

Product Description

The HARVEY TOOL 20295 is a solid carbide micro drill bit designed for precision drilling in tight-tolerance applications. It is a wire gauge size 60, which corresponds to a decimal diameter of 0.0400 inches, and features a 130-degree point angle that promotes accurate entry and reduces walking on hard or brittle materials. The spiral flute geometry aids in chip evacuation during the cut. Right-hand cutting direction follows standard CNC and manual spindle conventions. With an overall length of 1.5000 inches and a 1/8-inch shank diameter, this bit is sized for use in collet-style toolholders and small drill chucks common in precision machine shops and micro-machining setups.

This micro drill bit is suited for precision drilling in metals, composites, printed circuit boards, and other materials where small-diameter hole accuracy is critical. The uncoated bright finish makes it a straightforward choice for general-purpose micro-drilling tasks where coating is not required by the application. Machinists, tool-and-die makers, and electronics manufacturing technicians are the typical end users of bits in this size range. It is sold individually and is appropriate for both production environments and single-run precision work.

Key Features

• Wire gauge size 60 with 0.0400-inch decimal diameter for tight-tolerance hole requirements
• 130-degree point angle reduces drill walk and improves entry accuracy on hard materials
• Solid carbide construction provides rigidity and wear resistance at small diameters
• Spiral flute design promotes chip evacuation in deep or interrupted cuts
• Bright/uncoated finish suitable for general-purpose micro-drilling without coating interference
• Right-hand cut matches standard spindle direction on CNC mills and drill presses

Compatibility

Designed for use with collet-style toolholders and drill chucks accepting a 1/8-inch shank diameter, as found on CNC machining centers, micro-drill presses, and benchtop precision drilling equipment.

Installation Notes

Installation and use should be performed by qualified machinists or tooling technicians familiar with small-diameter carbide tooling. Carbide is brittle at small diameters — ensure the spindle runs true and the workpiece is rigidly fixtured before drilling to avoid breakage. Power down and lock out the machine before changing tooling. Follow the machine manufacturer's recommended RPM and feed guidelines for micro-diameter carbide drills, as excessive feed force is the primary cause of breakage in this size class.